Innovative solutions for industrial gases

General Information

Description

This product line comprises highly efficient, sustainable and proven compression solutions for various applications within process industries. Customers benefit from Siemens' decades of experience and can select from our range of turbocompressors to suit their specific needs.

Product Information

STC-SI

Siemens Turbocompressor - Single Shaft, Integrated Coolers

Description

Design Concept

Technical Data

Benefits

Innovative solution for air separationSeveral trends in the air separation market influenced the development of Siemens’ new isothermal turbocompressor. A lot of ASUs (air separation units) aim for capacities of 2,000 up to 3,500 tons of oxygen per day, which require volume flows of air between 400,000 and 700,000 m³ per hour – the range of the STC-SI. Secondly, the availability of exothermal processes in applications such as coal and gas to liquids (C/GTL) integrated gasification combined cycle (IGCC) plants makes steam turbines the preferred compressor drive. – the STC-SI is optimized for steam turbine drive. These trends go hand in hand with the increased demand for standardized products, less complex compressor train architecture and cost efficient compression solutions – as implemented in STC-SI design.

These isothermal compressors extend and optimize the existing product range for air separation. The concept combines well-proven technologies with innovative elements such as the integrated coolers and high-efficiency water separators. The technology is based on Siemens’ long term compressor expertise and comprehensive research and development.

Siemens STC-SI compressor is a standardized compressor line for the air separation market

Three stage single-shaft compressor with integrated coolers

Use of semi-open impellers

Symmetric flow field to the coolers with homogenous profile to ensure an optimum cooler loading per area

Reduced inner leakages due to small split line dimensions as a result of the optimized cooler arrangement

Very robust rotor dynamics due to ruggedness against imbalances at 1st stage Optimum fit of STC-SI speeds to siemens industrial steam turbine family (higher speeds due to smaller impeller diameter of 1st stage)

Minimum number of spares requiredLight weight machine design

High efficiency water separators to ensure water drainage w/o risk of water accumulation and highest water separation rates (~99%)